[TheMole]

It’s still an interesting number. Until I heard about the “350 movement” I believed that carbon dioxide formed almost 1% of the atmosphere. I was surprised to learn that it is no more than .035 of 1%. That’s not much for a substance that every person and animal is breathing out constantly. Perhaps plant life sucks it up very effectively.

[I got the rope]

Hmmm...I wonder where they came up with with 350ppm value. It certainly wasn't from any empirical study.

I wonder what science really tells us. Courtesy of Dr. Idso...my FReeper friends.